A British woman is distraught after losing a gift from her late daughter in one of the busiest pedestrian areas in the world: New York's Time Square. 

Vicky Pyne lost a necklace from her daughter, Alice, that had two charms on it. One charm was pressed with Alice's fingerprint, the other with Vicky's younger daughter Milly's fingerprint. 

Alice passed away at the age of 17 from Hodgkins lymphoma in 2013, and wanted to make sure her mother had a special memento.

"She was just fourteen years old when she was told there was no more curative options — it became a priority for her to plan and leave memories behind for us," Vicky shared on Facebook. 

She never removed the necklace from her neck, and was wearing it when she visited Times Square last week. 

"We were seated upstairs in Applebee's Restaurant for lunch (think it's 6th/7th Ave) and it was definitely on when I arrived there as I adjusted it in bathroom and touched fingers with Alice — something I frequently do," she recounted. "That was around 1:30pm, Valentine's Day. 

"We left and meandered along from W 42nd towards W 34th Street. Visited Lush, American Eagle and a few stores and eventually turned back into Macy's. It was missing when arriving back at Homewood Suites by Hilton on 37th."

Alice had a popular blog, "Alice's Bucket List," in which she listed the things she wanted to do before she passed away. With the help of her readers, she was able to swim with sharks, go whale-watching, and make other memories.

Now, her mother hopes social media will help her family once again. 

"I desperately want this necklace back," Vicky told NBC-4 New York. "She left me a few things, but this is the most precious thing she left for me. I can never get Alice back, but I'm hoping I can get my necklace back."

Vicky is offering a $300 reward for the returned necklace. More information is available on her Facebook page.